1. Chromosomal differentiation withinCrocus vernus agg. (Iridaceae) in the Carpathian Mts.

   • Jan N. Rafiński
   • Teresa Passakas

   OriginalPaper Pages: 1 - 8

2. A contribution to the karyology ofCrocus vernus agg. (Iridaceae) from the Iserian Mts. (Sudety Mts., Poland)

   • Jan N. Rafiński
   • Teresa Passakas

   OriginalPaper Pages: 9 - 13

3. Eine neueThomsonia-Art (Araceae) aus Thailand

   • Josef Bogner

   OriginalPaper Pages: 15 - 20

4. Weitere cytotaxonomische Beiträge zurTaraxacum-Flora der Türkei

   • Reinhard Doll

   OriginalPaper Pages: 21 - 27

5. Systematics and phylogeny of theCompositae (Asteraceae)

   • Gerhard Wagenitz

   OriginalPaper Pages: 29 - 46

6. Mallomonas transsylvanica, spec. nova (Chrysophyceae), light and electron microscopical studies

   • Leontin Stefan Péterfi
   • Laura Momeu

   OriginalPaper Pages: 47 - 57